Further, having affirmed that he would be beholden to none of them, he got the contract to carry the United States mail, twice a week, from Kelterville up over Tarwater Mountain to Old Almaden--which was a sporadically worked quick-silver mine in the upland cattle country.
spindle. 1. a pin tapered at one end or both ends, or something with this shape. 2. the thin, tapering figure occurring during metaphase of cell division, composed of microtubules radiating from the centrioles and connecting to the chromosomes at their centromeres.
The spindle apparatus consists of spindle fibers, motor proteins, chromosomes, and in some cells, structures called asters. In animal cells, spindle fibers are produced from cylindrical microtubules called centrioles. Centrioles form asters and asters generate spindle fibers during the cell cycle.